// Copyright © 2018 Camunda Services GmbH (info@camunda.com)
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package commands

import (
	"context"
	"fmt"
	"github.com/camunda/zeebe/clients/go/v8/pkg/pb"
	"github.com/spf13/cobra"
)

type SetVariablesResponseWrapper struct {
	resp *pb.SetVariablesResponse
}

func (s SetVariablesResponseWrapper) human() (string, error) {
	return fmt.Sprint(
		"Set the variables of element instance with key '",
		setVariablesKey,
		"' to '",
		setVariablesVariablesFlag,
		"' with command '",
		s.resp.GetKey(), "'",
	), nil
}

func (s SetVariablesResponseWrapper) json() (string, error) {
	return toJSON(s.resp)
}

var (
	setVariablesKey           int64
	setVariablesVariablesFlag string
	setVariablesLocalFlag     bool
)

var setVariablesCmd = &cobra.Command{
	Use:     "variables <key>",
	Short:   "Sets the variables of a given flow element",
	Args:    keyArg(&setVariablesKey),
	PreRunE: initClient,
	RunE: func(cmd *cobra.Command, args []string) error {
		request, err := client.NewSetVariablesCommand().ElementInstanceKey(setVariablesKey).VariablesFromString(setVariablesVariablesFlag)
		if err != nil {
			return err
		}

		request.Local(setVariablesLocalFlag)
		ctx, cancel := context.WithTimeout(context.Background(), timeoutFlag)
		defer cancel()

		response, err := request.Send(ctx)
		if err != nil {
			return err
		}
		err = printOutput(SetVariablesResponseWrapper{response})
		return err
	},
}

func init() {
	addOutputFlag(setVariablesCmd)
	setCmd.AddCommand(setVariablesCmd)

	setVariablesCmd.Flags().StringVar(&setVariablesVariablesFlag, "variables", "{}", "Specify the variables as JSON object string")
	if err := setVariablesCmd.MarkFlagRequired("variables"); err != nil {
		panic(err)
	}

	setVariablesCmd.Flags().BoolVar(&setVariablesLocalFlag, "local", false, "Specify local or propagating update semantics")
}
